www.mintnpink.com / the website was under construction

I ordered small bikini from the website www.mintnpink.com. I received bikini, but it didn’t look alike as on the picture on the website. As well as the size wasn’t S, it was so small that of course hasn’t fitted me. I contacted the seller and told that I wanted to return order and get money back, and she agreed. But two days later she hasn’t replied to my emails and her website was under construction. I need some help, because I want my money back. Please.